89015c4648
in vfs_detach(). vfs_done may free global filesystem's resources, typically those allocated in respective filesystem's init function. Needed so those filesystems which went in via LKM have a chance to clean after themselves before unloading. This fixes random panics when LKM for filesystem using pools was loaded and unloaded several times. For each leaf filesystem, add appropriate vfs_done routine.
700 lines
16 KiB
C
700 lines
16 KiB
C
/* $NetBSD: filecore_vfsops.c,v 1.11 2000/03/16 18:08:22 jdolecek Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 Andrew McMurry
|
|
* Copyright (c) 1994 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* filecore_vfsops.c 1.1 1998/6/26
|
|
*/
|
|
|
|
#if defined(_KERNEL) && !defined(_LKM)
|
|
#include "opt_compat_netbsd.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/vnode.h>
|
|
#include <miscfs/specfs/specdev.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/file.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/pool.h>
|
|
|
|
#include <filecorefs/filecore.h>
|
|
#include <filecorefs/filecore_extern.h>
|
|
#include <filecorefs/filecore_node.h>
|
|
#include <filecorefs/filecore_mount.h>
|
|
|
|
extern struct vnodeopv_desc filecore_vnodeop_opv_desc;
|
|
|
|
struct vnodeopv_desc *filecore_vnodeopv_descs[] = {
|
|
&filecore_vnodeop_opv_desc,
|
|
NULL,
|
|
};
|
|
|
|
struct vfsops filecore_vfsops = {
|
|
MOUNT_FILECORE,
|
|
filecore_mount,
|
|
filecore_start,
|
|
filecore_unmount,
|
|
filecore_root,
|
|
filecore_quotactl,
|
|
filecore_statfs,
|
|
filecore_sync,
|
|
filecore_vget,
|
|
filecore_fhtovp,
|
|
filecore_vptofh,
|
|
filecore_init,
|
|
filecore_done,
|
|
filecore_sysctl,
|
|
NULL, /* filecore_mountroot */
|
|
filecore_checkexp,
|
|
filecore_vnodeopv_descs,
|
|
};
|
|
|
|
/*
|
|
* Called by vfs_mountroot when iso is going to be mounted as root.
|
|
*
|
|
* Name is updated by mount(8) after booting.
|
|
*/
|
|
|
|
static int filecore_mountfs __P((struct vnode *devvp, struct mount *mp,
|
|
struct proc *p, struct filecore_args *argp));
|
|
|
|
#if 0
|
|
int
|
|
filecore_mountroot()
|
|
{
|
|
struct mount *mp;
|
|
extern struct vnode *rootvp;
|
|
struct proc *p = curproc; /* XXX */
|
|
int error;
|
|
struct filecore_args args;
|
|
|
|
if (root_device->dv_class != DV_DISK)
|
|
return (ENODEV);
|
|
|
|
/*
|
|
* Get vnodes for swapdev and rootdev.
|
|
*/
|
|
if (bdevvp(rootdev, &rootvp))
|
|
panic("filecore_mountroot: can't setup rootvp");
|
|
|
|
if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0)
|
|
return (error);
|
|
|
|
args.flags = FILECOREMNT_ROOT;
|
|
if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) {
|
|
mp->mnt_op->vfs_refcount--;
|
|
vfs_unbusy(mp);
|
|
free(mp, M_MOUNT);
|
|
return (error);
|
|
}
|
|
simple_lock(&mountlist_slock);
|
|
CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
|
|
simple_unlock(&mountlist_slock);
|
|
(void)filecore_statfs(mp, &mp->mnt_stat, p);
|
|
vfs_unbusy(mp);
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* VFS Operations.
|
|
*
|
|
* mount system call
|
|
*/
|
|
int
|
|
filecore_mount(mp, path, data, ndp, p)
|
|
struct mount *mp;
|
|
const char *path;
|
|
void *data;
|
|
struct nameidata *ndp;
|
|
struct proc *p;
|
|
{
|
|
struct vnode *devvp;
|
|
struct filecore_args args;
|
|
size_t size;
|
|
int error;
|
|
struct filecore_mnt *fcmp = NULL;
|
|
|
|
error = copyin(data, (caddr_t)&args, sizeof (struct filecore_args));
|
|
if (error)
|
|
return (error);
|
|
|
|
if ((mp->mnt_flag & MNT_RDONLY) == 0)
|
|
return (EROFS);
|
|
|
|
/*
|
|
* If updating, check whether changing from read-only to
|
|
* read/write; if there is no device name, that's all we do.
|
|
*/
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
fcmp = VFSTOFILECORE(mp);
|
|
if (args.fspec == 0)
|
|
return (vfs_export(mp, &fcmp->fc_export, &args.export));
|
|
}
|
|
/*
|
|
* Not an update, or updating the name: look up the name
|
|
* and verify that it refers to a sensible block device.
|
|
*/
|
|
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
|
|
if ((error = namei(ndp)) != 0)
|
|
return (error);
|
|
devvp = ndp->ni_vp;
|
|
|
|
if (devvp->v_type != VBLK) {
|
|
vrele(devvp);
|
|
return ENOTBLK;
|
|
}
|
|
if (major(devvp->v_rdev) >= nblkdev) {
|
|
vrele(devvp);
|
|
return ENXIO;
|
|
}
|
|
/*
|
|
* If mount by non-root, then verify that user has necessary
|
|
* permissions on the device.
|
|
*/
|
|
if (p->p_ucred->cr_uid != 0) {
|
|
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
|
error = VOP_ACCESS(devvp, VREAD, p->p_ucred, p);
|
|
VOP_UNLOCK(devvp, 0);
|
|
if (error) {
|
|
vrele(devvp);
|
|
return (error);
|
|
}
|
|
}
|
|
if ((mp->mnt_flag & MNT_UPDATE) == 0)
|
|
error = filecore_mountfs(devvp, mp, p, &args);
|
|
else {
|
|
if (devvp != fcmp->fc_devvp)
|
|
error = EINVAL; /* needs translation */
|
|
else
|
|
vrele(devvp);
|
|
}
|
|
if (error) {
|
|
vrele(devvp);
|
|
return error;
|
|
}
|
|
fcmp = VFSTOFILECORE(mp);
|
|
(void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
|
|
memset(mp->mnt_stat.f_mntonname + size, 0, MNAMELEN - size);
|
|
(void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
|
|
&size);
|
|
memset(mp->mnt_stat.f_mntfromname + size, 0, MNAMELEN - size);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
static int
|
|
filecore_mountfs(devvp, mp, p, argp)
|
|
struct vnode *devvp;
|
|
struct mount *mp;
|
|
struct proc *p;
|
|
struct filecore_args *argp;
|
|
{
|
|
struct filecore_mnt *fcmp = (struct filecore_mnt *)0;
|
|
struct buf *bp = NULL;
|
|
dev_t dev = devvp->v_rdev;
|
|
int error = EINVAL;
|
|
int ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
|
|
extern struct vnode *rootvp;
|
|
struct filecore_disc_record *fcdr;
|
|
unsigned map;
|
|
unsigned log2secsize;
|
|
|
|
if (!ronly)
|
|
return EROFS;
|
|
|
|
/*
|
|
* Disallow multiple mounts of the same device.
|
|
* Disallow mounting of a device that is currently in use
|
|
* (except for root, which might share swap device for miniroot).
|
|
* Flush out any old buffers remaining from a previous use.
|
|
*/
|
|
if ((error = vfs_mountedon(devvp)) != 0)
|
|
return error;
|
|
if (vcount(devvp) > 1 && devvp != rootvp)
|
|
return EBUSY;
|
|
if ((error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0)) != 0)
|
|
return (error);
|
|
|
|
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
|
|
if (error)
|
|
return error;
|
|
|
|
/* Read the filecore boot block to check FS validity and to find the map */
|
|
error = bread(devvp, FILECORE_BOOTBLOCK_BLKN,
|
|
FILECORE_BOOTBLOCK_SIZE, NOCRED, &bp);
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp,
|
|
FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE,
|
|
bp, error);
|
|
#endif
|
|
if (error != 0)
|
|
goto out;
|
|
if (filecore_bbchecksum(bp->b_data) != 0) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
fcdr = (struct filecore_disc_record *)(bp->b_data+FILECORE_BB_DISCREC);
|
|
map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare)
|
|
* (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE)
|
|
<< fcdr->log2bpmb) >> fcdr->log2secsize;
|
|
log2secsize = fcdr->log2secsize;
|
|
bp->b_flags |= B_AGE;
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("brelse(%p) vf1\n", bp);
|
|
#endif
|
|
brelse(bp);
|
|
bp = NULL;
|
|
|
|
/* Read the bootblock in the map */
|
|
error = bread(devvp, map, 1 << log2secsize, NOCRED, &bp);
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp,
|
|
map, 1 << log2secsize, bp, error);
|
|
#endif
|
|
if (error != 0)
|
|
goto out;
|
|
fcdr = (struct filecore_disc_record *)(bp->b_data + 4);
|
|
fcmp = malloc(sizeof *fcmp, M_FILECOREMNT, M_WAITOK);
|
|
memset((caddr_t)fcmp, 0, sizeof *fcmp);
|
|
if (fcdr->log2bpmb > fcdr->log2secsize)
|
|
fcmp->log2bsize = fcdr->log2bpmb;
|
|
else fcmp->log2bsize = fcdr->log2secsize;
|
|
fcmp->blksize = 1 << fcmp->log2bsize;
|
|
memcpy((caddr_t)&fcmp->drec, (caddr_t)fcdr, sizeof(*fcdr));
|
|
fcmp->map = map;
|
|
fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare)
|
|
/ (fcdr->idlen + 1);
|
|
fcmp->mask = (1 << fcdr->idlen) - 1;
|
|
if (fcdr->big_flag & 1) {
|
|
fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32)
|
|
+ fcdr->disc_size) / fcmp->blksize;
|
|
} else {
|
|
fcmp->nblks=fcdr->disc_size / fcmp->blksize;
|
|
}
|
|
|
|
bp->b_flags |= B_AGE;
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("brelse(%p) vf2\n", bp);
|
|
#endif
|
|
brelse(bp);
|
|
bp = NULL;
|
|
|
|
mp->mnt_data = (qaddr_t)fcmp;
|
|
mp->mnt_stat.f_fsid.val[0] = (long)dev;
|
|
mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_FILECORE);
|
|
mp->mnt_maxsymlinklen = 0;
|
|
mp->mnt_flag |= MNT_LOCAL;
|
|
fcmp->fc_mountp = mp;
|
|
fcmp->fc_dev = dev;
|
|
fcmp->fc_devvp = devvp;
|
|
fcmp->fc_mntflags = argp->flags;
|
|
if (argp->flags & FILECOREMNT_USEUID) {
|
|
fcmp->fc_uid = p->p_cred->p_ruid;
|
|
fcmp->fc_gid = p->p_cred->p_rgid;
|
|
} else {
|
|
fcmp->fc_uid = argp->uid;
|
|
fcmp->fc_gid = argp->gid;
|
|
}
|
|
|
|
return 0;
|
|
out:
|
|
if (bp) {
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("brelse(%p) vf3\n", bp);
|
|
#endif
|
|
brelse(bp);
|
|
}
|
|
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
|
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
|
|
VOP_UNLOCK(devvp, 0);
|
|
if (fcmp) {
|
|
free((caddr_t)fcmp, M_FILECOREMNT);
|
|
mp->mnt_data = (qaddr_t)0;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Make a filesystem operational.
|
|
* Nothing to do at the moment.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_start(mp, flags, p)
|
|
struct mount *mp;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
int
|
|
filecore_unmount(mp, mntflags, p)
|
|
struct mount *mp;
|
|
int mntflags;
|
|
struct proc *p;
|
|
{
|
|
struct filecore_mnt *fcmp;
|
|
int error, flags = 0;
|
|
|
|
if (mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
#if 0
|
|
mntflushbuf(mp, 0);
|
|
if (mntinvalbuf(mp))
|
|
return EBUSY;
|
|
#endif
|
|
if ((error = vflush(mp, NULLVP, flags)) != 0)
|
|
return (error);
|
|
|
|
fcmp = VFSTOFILECORE(mp);
|
|
|
|
if (fcmp->fc_devvp->v_type != VBAD)
|
|
fcmp->fc_devvp->v_specmountpoint = NULL;
|
|
vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY);
|
|
error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED, p);
|
|
vput(fcmp->fc_devvp);
|
|
free((caddr_t)fcmp, M_FILECOREMNT);
|
|
mp->mnt_data = (qaddr_t)0;
|
|
mp->mnt_flag &= ~MNT_LOCAL;
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
int
|
|
filecore_root(mp, vpp)
|
|
struct mount *mp;
|
|
struct vnode **vpp;
|
|
{
|
|
struct vnode *nvp;
|
|
int error;
|
|
|
|
if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0)
|
|
return (error);
|
|
*vpp = nvp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do operations associated with quotas, not supported
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_quotactl(mp, cmd, uid, arg, p)
|
|
struct mount *mp;
|
|
int cmd;
|
|
uid_t uid;
|
|
caddr_t arg;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* Get file system statistics.
|
|
*/
|
|
int
|
|
filecore_statfs(mp, sbp, p)
|
|
struct mount *mp;
|
|
struct statfs *sbp;
|
|
struct proc *p;
|
|
{
|
|
struct filecore_mnt *fcmp = VFSTOFILECORE(mp);
|
|
|
|
#ifdef COMPAT_09
|
|
sbp->f_type = 255;
|
|
#else
|
|
sbp->f_type = 0;
|
|
#endif
|
|
sbp->f_bsize = fcmp->blksize;
|
|
sbp->f_iosize = sbp->f_bsize; /* XXX */
|
|
sbp->f_blocks = fcmp->nblks;
|
|
sbp->f_bfree = 0; /* total free blocks */
|
|
sbp->f_bavail = 0; /* blocks free for non superuser */
|
|
sbp->f_files = 0; /* total files */
|
|
sbp->f_ffree = 0; /* free file nodes */
|
|
if (sbp != &mp->mnt_stat) {
|
|
memcpy(sbp->f_mntonname, mp->mnt_stat.f_mntonname, MNAMELEN);
|
|
memcpy(sbp->f_mntfromname, mp->mnt_stat.f_mntfromname, MNAMELEN);
|
|
}
|
|
strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
|
|
return 0;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_sync(mp, waitfor, cred, p)
|
|
struct mount *mp;
|
|
int waitfor;
|
|
struct ucred *cred;
|
|
struct proc *p;
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* File handle to vnode
|
|
*
|
|
* Have to be really careful about stale file handles:
|
|
* - check that the inode number is in range
|
|
* - call iget() to get the locked inode
|
|
* - check for an unallocated inode (i_mode == 0)
|
|
* - check that the generation number matches
|
|
*/
|
|
|
|
struct ifid {
|
|
ushort ifid_len;
|
|
ushort ifid_pad;
|
|
u_int32_t ifid_ino;
|
|
};
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_fhtovp(mp, fhp, vpp)
|
|
struct mount *mp;
|
|
struct fid *fhp;
|
|
struct vnode **vpp;
|
|
{
|
|
struct ifid *ifhp = (struct ifid *)fhp;
|
|
struct vnode *nvp;
|
|
struct filecore_node *ip;
|
|
int error;
|
|
|
|
if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) {
|
|
*vpp = NULLVP;
|
|
return (error);
|
|
}
|
|
ip = VTOI(nvp);
|
|
if (filecore_staleinode(ip)) {
|
|
vput(nvp);
|
|
*vpp = NULLVP;
|
|
return (ESTALE);
|
|
}
|
|
*vpp = nvp;
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_checkexp(mp, nam, exflagsp, credanonp)
|
|
struct mount *mp;
|
|
struct mbuf *nam;
|
|
int *exflagsp;
|
|
struct ucred **credanonp;
|
|
{
|
|
struct filecore_mnt *fcmp = VFSTOFILECORE(mp);
|
|
struct netcred *np;
|
|
|
|
/*
|
|
* Get the export permission structure for this <mp, client> tuple.
|
|
*/
|
|
np = vfs_export_lookup(mp, &fcmp->fc_export, nam);
|
|
if (np == NULL)
|
|
return (EACCES);
|
|
|
|
*exflagsp = np->netc_exflags;
|
|
*credanonp = &np->netc_anon;
|
|
return (0);
|
|
}
|
|
|
|
/* This looks complicated. Look at other vgets as well as the iso9660 one.
|
|
*
|
|
* The filecore inode number is made up of 1 byte directory entry index and
|
|
* 3 bytes of the internal disc address of the directory. On a read-only
|
|
* filesystem this is unique. For a read-write version we may not be able to
|
|
* do vget, see msdosfs.
|
|
*/
|
|
|
|
int
|
|
filecore_vget(mp, ino, vpp)
|
|
struct mount *mp;
|
|
ino_t ino;
|
|
struct vnode **vpp;
|
|
{
|
|
struct filecore_mnt *fcmp;
|
|
struct filecore_node *ip;
|
|
struct buf *bp;
|
|
struct vnode *vp;
|
|
dev_t dev;
|
|
int error;
|
|
|
|
fcmp = VFSTOFILECORE(mp);
|
|
dev = fcmp->fc_dev;
|
|
if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP)
|
|
return (0);
|
|
|
|
/* Allocate a new vnode/filecore_node. */
|
|
if ((error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, &vp))
|
|
!= 0) {
|
|
*vpp = NULLVP;
|
|
return (error);
|
|
}
|
|
ip = pool_get(&filecore_node_pool, PR_WAITOK);
|
|
memset((caddr_t)ip, 0, sizeof(struct filecore_node));
|
|
vp->v_data = ip;
|
|
ip->i_vnode = vp;
|
|
ip->i_dev = dev;
|
|
ip->i_number = ino;
|
|
ip->i_block = -1;
|
|
ip->i_parent = -2;
|
|
|
|
/*
|
|
* Put it onto its hash chain and lock it so that other requests for
|
|
* this inode will block if they arrive while we are sleeping waiting
|
|
* for old data structures to be purged or for the contents of the
|
|
* disk portion of this inode to be read.
|
|
*/
|
|
filecore_ihashins(ip);
|
|
|
|
if (ino == FILECORE_ROOTINO) {
|
|
/* Here we need to construct a root directory inode */
|
|
memcpy((caddr_t)ip->i_dirent.name, (caddr_t)"root", 4);
|
|
ip->i_dirent.load = 0;
|
|
ip->i_dirent.exec = 0;
|
|
ip->i_dirent.len = FILECORE_DIR_SIZE;
|
|
ip->i_dirent.addr = fcmp->drec.root;
|
|
ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ;
|
|
|
|
} else {
|
|
/* Read in Data from Directory Entry */
|
|
if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK,
|
|
FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) {
|
|
vput(vp);
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("brelse(%p) vf4\n", bp);
|
|
#endif
|
|
brelse(bp);
|
|
*vpp = NULL;
|
|
return (error);
|
|
}
|
|
|
|
memcpy((caddr_t)&ip->i_dirent,
|
|
(caddr_t)fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX),
|
|
sizeof(struct filecore_direntry));
|
|
#ifdef FILECORE_DEBUG_BR
|
|
printf("brelse(%p) vf5\n", bp);
|
|
#endif
|
|
brelse(bp);
|
|
}
|
|
|
|
ip->i_mnt = fcmp;
|
|
ip->i_devvp = fcmp->fc_devvp;
|
|
ip->i_diroff = 0;
|
|
VREF(ip->i_devvp);
|
|
|
|
/*
|
|
* Setup type
|
|
*/
|
|
vp->v_type = VREG;
|
|
if (ip->i_dirent.attr & FILECORE_ATTR_DIR)
|
|
vp->v_type = VDIR;
|
|
|
|
/*
|
|
* Initialize the associated vnode
|
|
*/
|
|
switch (vp->v_type) {
|
|
case VFIFO:
|
|
case VCHR:
|
|
case VBLK:
|
|
/*
|
|
* Devices not supported.
|
|
*/
|
|
vput(vp);
|
|
return (EOPNOTSUPP);
|
|
case VLNK:
|
|
case VNON:
|
|
case VSOCK:
|
|
case VDIR:
|
|
case VBAD:
|
|
case VREG:
|
|
break;
|
|
}
|
|
|
|
if (ino == FILECORE_ROOTINO)
|
|
vp->v_flag |= VROOT;
|
|
|
|
/*
|
|
* XXX need generation number?
|
|
*/
|
|
|
|
*vpp = vp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Vnode pointer to File handle
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
filecore_vptofh(vp, fhp)
|
|
struct vnode *vp;
|
|
struct fid *fhp;
|
|
{
|
|
struct filecore_node *ip = VTOI(vp);
|
|
struct ifid *ifhp;
|
|
|
|
ifhp = (struct ifid *)fhp;
|
|
ifhp->ifid_len = sizeof(struct ifid);
|
|
ifhp->ifid_ino = ip->i_number;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
filecore_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
|
|
int *name;
|
|
u_int namelen;
|
|
void *oldp;
|
|
size_t *oldlenp;
|
|
void *newp;
|
|
size_t newlen;
|
|
struct proc *p;
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|